Plow



Uct. 20: 1953. HENRI-ALBERT BONNEL PLOW 4 Sheets-Sheet 1 Filed Jan. 20. 1948 Oct. 20, 1953 Filed Jan. 20, 1948 HENRIAI BERT BONNEL 2,655,850

@nmemibv 04M 750M166 9% Ma im Oct. 20, 1953 HENRI-ALBERT BONNEL. 2,655,850

' PLOW Filed Jan. 20. 1948 4 Sheets-Sheet 5 v II- I flan/2054M Eon/4% Oct. 20, 1953 HENRI-ALBERT BONNEL 2,655,850

PLOW

Filed Jan. 20, 1948 4 Sheets-Sheet 4 Patented Oct. 20, 1953 fl en'ri Al hert" Bomf ifl eubourg, France Aeneas Jaw 8, Se N 31 nference M y 1 ,1 5

se ion 1, Public Law 690, Aug 1946i Ba tfentfexpires May; 1 1965' 1,1Gl ms- 111:

The present invention relates toimpr'ovements in double action plbug-hsof the kind comprising'a ploughshare orset ofploughshares fori ploughing in one direction and a ploughshare or set; of ploughshares for ploughing-in the opposite direction. These ploughshares or sets o'f ploughshares are supported by=a frame rotatable on the main structure in order tooccupyseveralidiffei'ent' posi ti ons-in one ofwhich-it' is on'eofthe ploughsha'res or'set of ploughshares which is in' position for ploughing whereas the other"is'rais-ed; an'iriverted position in whichfit is th'i's latter whichis in position for ploughing; and-lastly, anintermediate position in which all the plbughshares are raised.

It is an object oi the instant-inventionto provide a plough of noveT-construction and easy to operate.

It is a further object of the instant" invention to provide a' novel rela'tionship between a plough and' a tractor.

It is another object-to-provide asemi supported plough for mechanical traction."

It-is still a' further object to' provide'a tractor involving atliree-p'oint' coupling system.

Another object istoj-provide aplough including a pivoting andoscillatinflreartrain-facilitating unearthing and swinging movement of the ploughsharesl- A further'obje'ct is to provide a plough including an arrangement for eliminating a; mechanical system for raisingthe pl oughshares inoperativeposition and-"which provides' 'for earthing and unearthing at'th'e end-'of a furrowautm matic'ally in response to themovement of the tractor;

Q ther' characteristics and advantages of-the present invention will.become 'appa rent in the course of thefollowingdescription;-when=;read in conjunction with the accompanyingdrawings, illustrating 'lo'y' way of -exam le" and" diagrammatically an embodiment of an imprcvedfplough" according to the invention.

Inthe drawings:

Fig; 1 is an eleva'tion'al view" of the said plough;

Fig. 2 is' a corresponding'fend view butshowing another'positionfofthe leveri" 1 Elia-3 1s an-i-*-.1' ev ational view-off ahalif-supported plough coupled to" a tractor.

Fig. 4 is an end View from the front. with a er v 6 E91 lqn line H -7 1 B12 13- Fig; is a partial topiview of the forwardfcross member of. the. ploughibearing fi'a r ne with the shafts and the axialj bea n to: connection to. the tracton v. a c.

' ,"Tfi lb iee haw :infig-.iensi nt ssisaina 1 vice.

the usual way, a main structure I sup orted-my four wheels '2'. The: rear-wheels; of; the; plough, as shown inFig; 1; are mounted toswivelabout a vertical axis as-Well asya horizontal axiskrunning longitudinally- With;re spect,to the plough. A framed: on which: are secured the ploughshares and other accessoriesofithe? plo h; ns otat on a central cylindrical;bearn 3 of saidstrueture. Inthe example shown, it i's assumed ,tha-treference isrnade't'o adouble 'actioniplough withl one ploughshare, that is;- comprising pioughsl areg 5 for tilling'in one directio anda plpughshareja for tilling in the opposite-direction Itlisgohvious that several plough'shares could berpmYidedgon eachside.

In accordancewith the: -inventio n;- the, rotatio n of the ploughsharegbearing frama 4,,enaplin it to be brought into ,the: VQLIiORJSgDOSiIZiOQS it occupy, is operated byan: remely simp This; device comprise ;l w secured tovthe fram e ;4;;and ;on; which it-- is suf-- ficient to actin-order to rotate said :frame. This frame may be: locked, in ea,c'h, oiiithe. three; positions into which it may: :be;.brought, by: means ;of a .lock' 1 pivoting round an axisrfi carriedtbythe lever 1 6 itself. The said1l00k -cQOp,erat e s;-with slots 9a, 9b,,9cformedrin aimembverql-fl of; segment s ap .s 'curedto th ma nrstructu e; 1-: Wh

the. said lock engages: one-1 f; he; 8 9 191 5.

throughthe influence for instance, of ;1aspringl- I it locks the frame 4= and, as a result; the ploughshares in the? corresponding positionr;v Thus the slot to corresponds v to the position; of: the ploughshares for tillingto; theri -hitz the; slot 9c, j to the position fortillingtothe leit; and the middleslpt -9b';.to the: position of-rest'or, runpingwntheroad,

take hold of the I handle 'l l -fto make it"first of *all swing slightl'yjround its; axis (3 qwliich disengagies the lock from-the correspondingjslotlie Shop 9c) and then move the lever? 6 jintof; its new, position corresponding. to the de'sire'dffnew ,positioi it oithe frame4.. In this new, position; the lookT automatically engages. the rcorre'spondingslot 9:13:91) ergo. V V 4 ia sithy pqwime. ssq s tothe ntention.

supported plough. According to this embodiment, the forward bearing Wheels and their axles are withdrawn from the forward cross member of the plough bearing frame. This withdrawal may be easily carried out by the mere dismantling of parts which can always be reassembledif it 7 is later on desired to reconvert the plough into a drawn plough with four bearing wheels. This reconversion can readily be effected by the user himself.

Two side arms or short shafts I6 are secured to the ends of the forward cross member E, permanently by means of autogenous welding, for example, or removably by means of bolts. These :arms l6 are formed, for instance, by a flat section secured at one end to the lower wings of the beam formed by the cross member I and shaped so as 'to present at their free end a stirrup ll elongated in a lengthwise direction. The coupling of b the plough frame to the tractor is effected by inserting a bar or cross axle l8 both into the stirrups I1 and in the circular bores of each of the stirrups l9 secured at to the rear of the tractor.

The swinging movements of the plough in 'relation to the linking axle formed by the bar I8 are limited by a longitudinal bar or beam 2i arranged in the vertical longitudinal plane of the plough frame and hinged, on the one hand, around a horizontal axis 22 set in a stirrup 23 mounted on the cylindrical frame beam 3 at a point well to the rear of the forward cross memher I and, on the other hand, hinged at its other end around a vertical axis 24 at a point in the centre of the coupling system connected to the rear of the tractor. The vertical axis 24 may consist merely of a pin which can readily be withdrawn or inserted. The dismantling of the cross bar I8 can also be readily carried out by withdrawing a cotter pin 25 at one end of said bar, as shown in Fig. 5. The earthing of the ploughshares -5, 5a is controlled by means provided for this purpose on the rear wheel train 2 which is the same as that shown in the first embodiment. It will be seen that with this arrangement, the plough is held well in the furrow while remaining free to shift in relation to the tractor in order to position itself in a vertical direction dependent upon the resultant of the traotive efforts and the reactions borne by the ploughshares,

while at work. At the end of a furrow, the elongated stirrup I! and the vertical pivot 24 allow the plough to mak the necessary turn forthe continuation of a furrow, such continuation, in view of the reduced length of the plough and tractor, only requiring a limited surface area. When the tractor initiates its turn at the'end of a furrow, it causes the plough to pivot horizontally about the vertical support for the rear wheels owing to the rigidity of the coupling system. This horizontal pivoting of the plough automatically causes the plcughshares to swing up to median position when the second frame is unlocked owing'to the fact that the heel portion of the ploughshare strikes the unploughed -ground.- To resume the working position by 4. maintaining the second frame unlocked, the ploughshare strikes the ground and causes the whole frame to swing completely. This system completely eliminates the necessity of a costly system for raising the ploughshares. The above described structure also permits the tractor to maneuver rearwardly without difficulty due to the semi-automatic coupling system and due to the rear pair of wheels which become automatically oriented in the required direction. Driving is thereby facilitated and maneuvering acceler- J ated, thus resulting in gain of time and economy in the consumption of fuel by the tractor engine.

The lever 6 by means of which th ploughshare bearing frame may be swung, in the mannerdesc ribed in the first embodiment, may be raised asshown in Fig. 3 in a vertical plane adjacent to that of the front cross member I. In the construction shown, the lever 6 is pivoted at 26 on an arm 6a of the rotatable frame 4 and its end forms the catch I which engages one of the slots to, 9b, 9c of the fixed sector i8 50 as to determine the angular position of the frame 5 and the ploughshares. A spring I between the arm 6a and the lever B recalls the latter into engaging position in the slots 9a, 9b, 9c.

The modifications described apply whatever the number of ploughshares.

Thus, it will be seen that the operation of the plough in accordance with the instant invention is simplified. Further, four-wheeled drawn ploughs in accordance with the invention may be transformed into half supported ploughs in which the front wheels are-removed, the frame bearing, in the front, directly on the tractor.

The modifications are notably characterized by the following features, considered separately or in combination:

(a) The forward cross member I of the plough frame 4 remains organized in such a way as to permit the dismounting of the front wheels 2 which are merely withdrawn together with their axles, and it is provided with two side arms or shafts It rigidly secured at their ends associated with the cross member I and at their other ends they are provided with horizontally elongated stirrups I? through which may pass a rod or cross bar I 8 in order to provide a linked connection with the coupling system of the tractor..

(b) The vibrations of the plough as a whole around the joint formed by the cross bar I8 for connection to the tractor, are limited by a beam 2I arranged in the median vertical plane of the plough frame beam; 3 and hinged, on the one hand, to a cross axis of the frame beam 3 at a point 22 well behind the forward cross member l and, on the other hand,.around a vertical axis 24 secured to the tractor at a point below the cross linking bar.

(c) The linking betWeen the plough shafts'and the cross bar of the tractor is effected by stirrups I! which are elongatedin alengthwise direction.

It will be obvious to those skilledin the art that various changes may be made without departing from .thespirit of theinvention and therefore the invention is'not limited to what is shown in the drawings and described in the speciclaims.

I claimi 1. A wheeled ploughadapted to be supported at the front end by a tractor and at'the rear end by a pair of wheels, comprising a plough frame,

fication but only as indicated in the appended a pair of wheels independently carrying the rear end of said frame to transfer the weight. of said frameto'the'rear partof'said tractor thereby increasing the traction of said tractor, said pair of wheels being mounted to swivel both about a vertical axis and a horizontal axis running longitudinally with respect to said plough, a second frame for supporting a ploughshare, said second frame being mounted on said first frame for oscillation transversely thereabout, a pair of forwardly extending side arms attached to the front of said first frame, each said side arm having an elongated stirrup at the forward end thereof, a pair of rearwardly extending arms attached to the rear of said tractor, each said arm having a circular stirrup at the rear end thereof, and a cross bar passing through both said elongated stirrups and both said circular stirrups.

2. A plough in accordance with claim 1 in which the distance between said forwardly extending arms and said rearwardly extending arms is such that a slight lateral play is permitted be tween said tractor and said first frame.

3. A plough in accordance with claim 2 in which the swinging movements of the plough as a whole around the joint formed by the cross bar for connection to the tractor are limited by a beam located in the median vertical plane of said first frame and hinged, on the one end, to a cross axis of the frame at a point well behind the forward end of said first frame and, on the other end, around a vertical axis integral with the tractor at a point below the cross bar.

4. In a wheeled plough adapted to be drawn by a tractor, a plough frame, a pair of wheels independently carrying the rear end of said plough frame to transfer the Weight of said frame to the rear part of said tractor thereby increasing the traction of said tractor, a coupling means for coupling the front of the plough frame to the rear of the tractor which comprises a pair of forwardly extending side arms attached to the front of said plough frame, each said side arm having an elongated stirrup at the forward end thereof, a pair of rearwardly extending arms attached to the rear of said tractor, each said arm having a circular stirrup at the rear end thereof, and a cross bar passing through both said elongated stirrups and both said circular stirrups.

5. The device claimed in claim 4 in which the distance between said forwardly extending arms and said rearwardly extending arms is such that a slight lateral play is permitted between said tractor and. said frame.

6. The device claimed in claim 5, in which the swinging movements of the plough as a whole around the joint formed by the cross bar for connection to the tractor are limited by a beam located in the median vertical plane of said frame and hinged, on the one end, to a cross axis of the frame at a point well behind the forward end of said frame and, on the other end, around a vertical axis integral with the tractor at a point below the cross bar.

HENRI-ALBERT BONNEL.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date Re. 10,839 Strait May 31, 1887 332,301 Strait Dec. 15, 1885 849,575 Samuels Apr. 9, 1907 1,165,267 McKay Dec. 21, 1915 1,410,917 Hee Mar. 28, 1922 1,481,565 Sellars et a1 Jan. 22, 1924 2,044,718 Rutter June 16, 1936 2,232,407 Riesterer Feb. 18, 1941 2,239,596 Doane Apr. 22, 1941 2,364,367 Janke Dec. 5, 1944 FOREIGN PATENTS Number Country Date 58,452 Austria Apr. 10, 1913 875,681 France June 29, 1942 181,731 Germany Feb. 28, 1907 366,798 Germany Jan. 13, 1923 271,983 Italy Feb. 25, 1930 95,463 Switzerland July 1, 1922 

